Travelling with climate scientists off Norway

To investigate how climate change is affecting the Arctic Circle Al Jazeera travelled to the northern Norwegian city of Tromso [Tania Page]

Tania Page and her team boarded a Norwegian marine research vessel called the G.O. Sars [Tania Page]

Onboard was a team of scientists tasked with testing new methods of measuring Norway's fish stocks [Tania Page]

They conducted dozens of experiments designed to improve, in particular, a 3D sonar called an MS70 which is the first of its kind to provide information on exactly how many fish are in a single school [Tania Page]

The data collected provides an invaluable resource for climate change experts hoping to better understand how marine life is responding to rising water temperatures, acidity, and sea levels [Tania Page]

It was with trepidation that Tania and her team fixed their camera to a crane on the ship's deck [Tania Page]

Peering overboard, the scientists wait for their sonar to be ready to pull up from the depths [Tania Page]

Killer whales could be seen off the side of the boat herding herring towards the surface of the water to feast [Tania Page]

An endless supply of fish is a perk of life at sea - this is the remnants of the cook's attempt at drying fish [Tania Page]

Another bonus of making the trip was the enchanting and hypnotic sight of the Northern Lights [Tania Page]